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What are the main uses of Sodium 3-Nitrobenzenesulfonate?
Sodium 3-Nitrobenzenesulfonate, Chinese name 3-nitrobenzene sulfonate, its use is quite extensive.
In the dyeing and finishing industry, its role is significant. It can be used as a dye inhibitor for reducing dyes and vulcanized dyes. Because in the dyeing process, many reducing dyes and vulcanized dyes have high affinity for fibers and are prone to uneven dyeing. And 3-nitrobenzene sulfonate can interact with dyes by virtue of its own characteristics, adjust the rate and degree of adsorption of dyes to fibers, and then achieve the purpose of uniform dyeing, so that the dyeing effect is more ideal, and the color is uniform and bright.
In the printing process, it also plays an important role as an oxidant for printed fabrics. Some unreacted dyes and additives remain on the fabric after printing, and need to be oxidized to fix the color and improve the color fastness. Sodium 3-nitrobenzene sulfonate has moderate oxidation, which can effectively oxidize related substances to ensure that the color of the printed pattern is firm, not easy to fade, and has little damage to the fabric, which can better maintain the original quality of the fabric.
In addition, in the field of organic synthesis, it is an important organic synthesis intermediate and participates in many chemical reactions. Due to its specific nitro and sulfonic acid structure on the benzene ring, it endows the compound with unique reactivity and selectivity. It can be modified and transformed through a series of chemical reactions to prepare a variety of functional organic compounds, such as drugs, pigments, fragrances, and other fine chemicals, providing key raw materials for the development of organic synthesis chemistry.
What are the physical properties of Sodium 3-Nitrobenzenesulfonate?
Sodium-3-nitrobenzene sulfonate is one of the organic compounds. It has many physical properties and is unique.
This compound is often in a solid state, white or off-white in color, and upon closer inspection, its morphology is mostly powdery or crystalline, uniform and delicate in quality. It feels light and fine to the touch, if not, like dust. As far as its melting point is concerned, it is about a certain temperature range. This temperature is the critical point for it to change from solid to liquid. Precise control of this temperature is crucial in related process operations.
In terms of solubility, sodium-3-nitrobenzene sulfonate is soluble in water. After entering water, it gradually melts and mixes with water to form a uniform solution. This property makes it suitable for chemical reactions or industrial processes in many aqueous systems. However, in organic solvents, such as common ethanol, ether, etc., their solubility is very different, or slightly soluble, or insoluble, and this difference also determines their behavior in different solvent environments.
Its density is also an important physical property. Compared with water, it has a specific specific specific gravity relationship. This relationship affects its sinking and floating situation in liquid media. It is a factor that cannot be ignored in some processes involving liquid-liquid separation or mixing.
In addition, the color of its appearance is closely related to its purity. Those with high purity are purer and whiter. If it contains impurities, the color may be deviated, or yellowed, or with other variegated colors. Looking at its color, you can also know a little about its purity. The thickness of its particles will also affect its physical properties such as fluidity. Fine particles have good fluidity and are easier to handle in operations such as powder processing.
What are the chemical properties of Sodium 3-Nitrobenzenesulfonate?
Sodium and sodium 3-nitrobenzene sulfonate, the chemical properties of the two are really important content in chemistry study.
Sodium, the metal element is also very active. It has strong reducing properties, and reacts rapidly in contact with water to generate sodium hydroxide and hydrogen, and this reaction is violent, often accompanied by the release of a large amount of heat, causing hydrogen combustion. In the air, sodium is also easy to combine with oxygen, and at first the surface darkens to form sodium oxide; if heated, it burns violently to produce light yellow sodium peroxide.
Sodium 3-nitrobenzene sulfonate is an organic compound. The nitro group in its molecule has strong electron absorption, which reduces the electron cloud density of the benzene ring, which in turn affects the chemical activity of the benzene ring. In this compound, the sodium sulfonate group - SO 🥰 Na is hydrophilic, making it soluble in water. Its chemical properties are mainly reflected in the substitution reaction of the benzene ring, and the presence of nitro groups makes the electrophilic substitution reaction more likely to occur in the benzene ring interposition. At the same time, sodium 3-nitrobenzene sulfonate can also participate in some reduction reactions, and nitro groups can be reduced to amino groups. In addition, because of its sodium sulfonate group, under certain conditions, reactions related to the group can occur, such as metathesis with certain metal ions.
What is the production method of Sodium 3-Nitrobenzenesulfonate?
The method of preparing sodium 3-nitrobenzenesulfonate, in the past, the craftsman followed the following steps.
First take benzenesulfonic acid as the base material and put it into a special reactor. The kettle needs to be cast with fine iron, which can withstand high temperature and chemical attack. Then, an appropriate amount of concentrated nitric acid is slowly added to the kettle. The nitric acid must be a first-class pure thing without any impurities. When adding acid, the craftsman needs to pay full attention and control the flow rate with exquisite methods to prevent overreaction.
When reacting, the temperature needs to be strictly controlled. The temperature in the kettle should be adjusted skillfully by charcoal fire or steam, so that the temperature in the kettle is constant in a suitable range, roughly within a specific degree range. This range depends on long-term experience. A slight deviation will cause the product to be impure. At this temperature, benzenesulfonic acid and nitric acid react quietly, and after several hours, the interaction between molecules gradually changes.
After the reaction is completed, the contents of the kettle are slowly poured out and flowed into a special container. This container contains an appropriate amount of alkali, usually a solution of sodium hydroxide, and its concentration is also exquisite. The alkali and the reaction product blend and undergo a neutralization.
Afterwards, the method of filtration is used to remove its insoluble impurities. The filter is made of fine silk cloth or special clay, which can effectively separate the dross. The filtrate contains a solution of 3-nitrobenzenesulfonic acid sodium.
Finally, pure 3-nitrobenzene sulfonate crystals are obtained from the solution by evaporation, concentration and crystallization. First, steam slowly over low heat, so that the water gradually loses and the solution gradually thickens. When the time is right, let stand and cool, and the crystals will slowly precipitate. Carefully collect with delicate tools to obtain the final product. This preparation method requires skilled craftsmen and experienced craftsmen to produce the best quality 3-nitrobenzene sulfonate sodium.
Sodium 3-Nitrobenzenesulfonate what to pay attention to when storing and transporting
Sodium 3-nitrobenzene sulfonate is commonly used in chemical industry. When storing and transporting, it really needs a lot of attention.
One is related to storage. This substance should be placed in a cool, dry and well-ventilated place. Because it is afraid of moisture, if the environment is humid, it is easy to cause moisture deterioration, affecting the quality and use effect. And keep away from fire and heat sources, because it encounters open flames, hot topics, or dangerous, it may cause combustion or even explosion. At the same time, it should be stored separately from oxidants, reducing agents, acids, alkalis, etc., and must not be mixed to prevent chemical reactions and safety accidents. The storage area should also be equipped with suitable materials to contain leaks so that they can be dealt with in time when accidents occur.
Second, it involves transportation. Before transportation, it is necessary to ensure that the packaging is complete and well sealed to prevent leakage during transportation. During transportation, it is necessary to strictly follow the prescribed route and do not stay in densely populated areas and residential areas for a long time. Transportation vehicles should be equipped with corresponding varieties and quantities of fire-fighting equipment and leakage emergency treatment equipment. Escort personnel must be familiar with the nature of the transported items and emergency treatment methods. During transportation, ensure that the container does not leak, collapse, fall, or damage.
In short, 3-nitrobenzene sulfonate sodium needs to be treated with caution in terms of environmental conditions, item placement, packaging, transportation routes, and staffing when storing and transporting, and operate strictly according to specifications to ensure safety and avoid accidents.
